拼命工作， 工作卖力

hard put to it───很难接受

hard by sth───被某事折磨

hard waters───硬质水

hard and fast───严格的；固定不变的

hard as nails───铁石心肠，冷酷无情

hard court───铺有混凝土或柏油的网球场

hard hat───安全帽；建筑工人；顽固的保守派

hard hats───安全帽（hardhat的名词复数）

hard left───坚定的左派

Whatever you do, work hard at it and don't try to dodge the column.───无论做什么事, 都要努力去做,别偷懒.

If you want to make money or build your business, you need to work hard at it.───如果你想赚钱又或者开创自己的生意，你需要努力地为之工作。

I studied art and worked hard at it.───我学的是艺术,也很努力.

You must have worked very hard at it.───你一定花了很大劲.

I've been working hard at it and I made it.───我一直在努力，还真干成了。

When you really like what you're doing, you work very hard at it.───当你确实喜欢你所做的事情时，你就会很卖力地去做。

He pulled hard at it until he was pleased with it.

Whatever you do, work hard at it and don't try to dodge the column.

Sarah was hard at it on her computer.

You must have worked very hard at it.

Some people dream of success while others wake up and work hard at it.

Every evening after school and at weekends she's hard at it doing research.

That's what I like to see - everybody hard at it!

When I left they were all still hard at it .

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